AGING CHARACTERISTICS OF QUARTZ CRYSTAL RESONATORS
Abstract
The measurement accuracy and resonator stabilities obtained have directed attention to oven temperature control and oven design as the principal remaining areas wherein improvements must be made for attainment of maximum resonator stabilities. Problems encountered are associated with large ovens where heat losses, entry recovery, and frequency versus position differences cause significant variations in frequency measurements for a given resonator. Measurement of Q for resonators fabricated, made for the series mode of operation, has given values in the range 100,000 to 300,000. Resonators previously fabricated have continued to exhibit excellent stabilities within the limitations of the measurement and temperature control facilities. Mounting of resonators in the HC-27/U glass container is now giving excellent yield (about 90%). Ag plated units did not survive heat requirements for sealing.
Document Details
- Document Type
- Technical Report
- Publication Date
- May 15, 1962
- Accession Number
- AD0282306
Entities
People
- R.b. Belser
- W.h. Hicklin
Organizations
- Georgia Tech